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1,294,643 APPLICATION FILED MAYS IQII. Patented 18,

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PINCUS FARB, OF NEWARK, NEW JERSEY, ASSIGNOR TO SONORA PHONOGRAIH CORPORATION, A CORPORATION OF NEW YORK.

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Specification of Letters Patent.

Patented Feb. 18, 1919.

Application iled May 8, 1917. Serial No. 167,378.

To all whom it may concern:

Be it known that I, PINCUS FARB, a citizen of the United States, and a resident of the city of Newark, county of Essex, and State of New Jersey, have invented a certain new and useful J ig, of which the following is a specification.

My invention relates to jigs for locating the position of one part of a mechanism relatively to another part, and more particularly for locating, on the outside of the cabinet, the position of the opening through which the'hub of the winding crank of a talking machine is inserted to engage the winding shaft of the motor, and also for locating, on the outside of the cabinet, the location of the opening through which passes the rod for operating the tone modifier when such is employed.

In the manufacture of talking machines, the motor is constructed in a machine shop and suspended on the underside of the motor 'i board, and the holes for the screws which will secure the board in the cabinet, are bored at the desired points. The horn is made by a horn maker who also produces a hollow block which is to connect the small end of the horn with the tone-arm of the machine. The horn maker also forms a recess at some point in the block. This recess is for the reception of a sliding damper or tone modifier. Before the horn is finished, a hole is bored in one side of the box in line with the damper recess. The cabinet or ornamental covering for the working parts of the machine, is built by a model maker. The horn is secured in the lower part of the cabinet with the block in one corner. The motor board is now placed in the cabinet over the horn and block. The board has an opening in line with Vthe vertical bore of the block, and an opening through which the turn-table shaft of the motor projects. Before the board is placed in position, careful measurement of the locations of the damper rod opening and of the winding shaft are taken and the cabinet maker must -mark oi on the outside of the cabinet points in axial alinement with the opening and the winding shaft. The holes for the crank and damper rod are now bored from the outside.

The roper locations of the holes on the sides o the cabinet are difficult to ascertain, and when the holes are bored it is found that about ten per cent. of them are not in proper position relatively to the shaft and rod opening, and this necessitates boring new holes and plugging up those first made. The cabinet is spoiled and must be sold, if at all, as damaged goods.

The objects of my invention are to obviate the necessity for measuring the parts to locate winding shaft and damper rod opening, to make certain the positions of the holes to be bored, to provide devices which can be manipulated by unskilled persons, and to expedite the work of the manufacturer. l

These and further objects will more fully appear in the following specification and accompanying drawings considered together or separately.

I have illustrated my invention in the accompanying drawings, in which like parts are designated by similar reference characters in all of the figures, and in which,-

Figure l is a plan view of a talking machine cabinet with the motor board in place and with the device for locating the damper rod opening in position, parts of the board being broken away;

Fig. 2 is a section on the line 2 2 of Fig. l;

Fig. 2a is a detail sectional view showing the damper in position;

Fig. 3 is a plan view of a motor board` with a device for locating the position of the winding shaft of the motor in position, parts being broken away to show the winding shaft; and

Fig. 4 is a side elevation of the same with parts broken away.

My invention comprises two appliances, one for locating the position of the damper rod opening, and another for locating the position of the winding shaft.

In the drawings, 1 designates a box like cabinet having sides 2 and 3, front and back members and a bottom. The cabinet is provided with a ledge 4 on which the motor board 5 rests. To the underside of the board is secured a motor 6. In the embodiment illustrated, I show an ordinary spring motor having a spring drum 7 carrying a spur wheel 8 which is engaged by a spur pinion 9 carried on the shaft 10. The shaft carries a pawl 11 which is engaged by a ratchet on the motor frame to prevent the shaft from turning backward. A ver-f tical shaft 12 geared to the spring drum through a governor, (not shown), projects .vill mark the side member 2 and a hole bored with that mark as a center will be in axial Llinement with the winding shaft.

While I have shown, described and claimed my improved device in connection with a talking machine, I desire to have it understood that I do not wish to limit myself to such use, as the apparatus is capable of other uses.

In accordance with the provisions of the patent statute, I have described the principle of my invention together with the apparatus which I now consider to represent the best embodiment thereof, but I desire it understood that my invention is not con-fined to the particular form of apparatus herein shown and described, and, therefore, I claim broadly the right to employ all equivalent instrumentalities coming within the scope of the claims, and by means of which objects of my inventionare attained, and the new results accomplished, as herein set forth, as it is obvious that the particular embodiment herein shown and described is only one of many that can be employed to attain these objects and accomplish these results.

Having now described my invention, what I claim and desire to secure by Letters Patent is:

l. An apparatus of the character described, comprising means for engaging a device, said means including a frame carrying a. member for engaging a predetermined point of a desired object, an adjustable markerl carried by the frame whereby a portion of the device may be located, and means whereby the marker will indicate a point in alinement with a desired portion of the device.

2. An apparatus of the character descri-bed, comprising a fitting adapted to engage a turn-table shaft, of a device having a screw hole and a winding shaft, a rod to the rod, means on the slide for engagement with a screw hole, a second slide and means fo-r securing it to the rod, an arm adjustable in the second slide, a marker carried by the arm, whereby, when the fitting is in engagement with the turn-table shaft and the slide is resting in the screw hole, the marker may be brought into axial alinement with said winding shaft, whereby the marker may be caused to engage the side of a part intervening between said winding shaft and the marker, and indicate thereon a point in axial alinement with said winding shaft.

3. A device of the character described, comprising a frame having means adapted to engage an object, a plurality of slidable members carried by said frame, means for adjustably holding said members, a marker having means permitting it to be brought into, and indicate a point in, axial alinement with a desired portion of the object.

4C. A device of the character described, comprising a frame having means adapted to engage an object, a plurality of slidable members carried by said frame, means for adj ustably holding said members, a marker having means permitting it to be brought into axial alinement with a desired portion of the object whereby the marker may be caused to engage the side of a part intervening between the object and the marker, and indicate on the part intervening a point in axial alinement with the object.

This specification signed and witnessed this 5th day of May, 1917.

PINCUS FARB. Witnesses:

IVM. VARIN, FRANK J. COUPE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, '.D. C. 

